Backend Engineer

Catawiki; Amsterdam; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Annual salary information

Work from home allowance

Commuting covered

Amsterdam office

Job summary

Catawiki is seeking a Backend Engineer to join its agile teams in Amsterdam. You will own building scalable microservices across Demand, Supply, or Fulfilment, contributing to search, discovery, bidding, and logistics capabilities.

The role emphasizes end-to-end ownership, collaboration with product designers and frontend/backend colleagues, and ongoing process improvements. We value strong OO design, 7+ years of experience, and a growth mindset.

Qualifications

• 7+ years of software development experience with OO programming.
• 3+ years in customer-facing product environments such as e-commerce or SaaS.
• Backend design, deployment, and high availability focus.
• Solid understanding of API design, SQL and relational DBs.
• Strong English communication and teamwork skills.
• Proactive, initiative-taking and growth-oriented.

Responsibilities

• Design, develop, test, deploy, maintain and improve scalable microservices.
• Own quality, resilience and maintainability of services.
• Collaborate with designers, product owners and engineers to ship innovations.
• Identify process improvements to increase efficiency.
• Document and promote development best practices.
• Fix bugs and refactor when needed to keep the product reliable.
• Learn and experiment with new technologies during Technical Week.

Skills

7+ years software development

3+ years product experience

Backend service design

API and SQL knowledge

Clear English communication

Collaborative mindset

Problem solving

Growth mindset

Job description

At Catawiki, every day brings the extraordinary! Whether it’s Daniel Ricciardo’s Formula 1 Car, a Woolly Mammoth’s Skeleton, Lady Gaga's Jumpsuit or Usain Bolt’s running shoe, we encounter exceptional objects every day.

We’re a one-of-a-kind marketplace for buying and selling special objects. Each week, more than 100,000 unique items are auctioned, all carefully curated by our passionate in-house experts.

Having sold over 25 million unique objects, our mission is to become the world’s most popular destination for special objects. As a growing, diverse and sustainable scale-up, we proudly live by three core values. If these values resonate with you, we’d love to explore how you can join us.

• Taking ownership and driving impact
• Being open to change and feedback
• Being passionate about our mission and our customers.

Your Mission

On our path to becoming the most visited online curated marketplace for special objects, our Engineering team is on a mission to deliver the best experience across our platforms by building best-in-class products for search and discovery, bidding, curation, logistics, payments, and support.

We’re a scale-up tackling customer-facing challenges at high scale, with 75,000 auctions per week and more than 10 million visitors per month. As aBackend Engineer, you’ll support one of our three verticals - Demand, Supply, or Fulfilment - improving and delivering product innovations for our platform.
Working in a small, fully autonomous, and highly collaborative Agile team, you will build scalable, maintainable, and resilient microservices and features. That’s why we’re looking for developers who share ideas, explore options, and communicate openly.

What You'll Do

You’ll be part of a team with end-to-end responsibility for its own microservices, collaborating across disciplines to build, operate, and continuously improve our products.

• Build end-to-end by designing, developing, testing, deploying, maintaining, and improving scalable microservices and features.
• Own what you deliver, taking responsibility for the quality, resilience, and maintainability of your team’s services throughout their lifecycle.
• Collaborate across disciplines while closely working with product designers, product owners, and frontend, backend, and mobile engineers to share ideas and deliver product innovations.
• Improve how we work, identifying opportunities to make our engineering processes more effective and efficient.
• Strengthen our engineering culture by documenting and advocating for development best practices across the team.
• Raise product quality by fixing bugs and refactoring the codebase where necessary to keep our products reliable and maintainable.
• Learn and experiment by testing new technologies and participating in Technical Week - a week dedicated to creativity, innovation, and knowledge sharing across domains after every two product sprints.

What You'll Bring

You understand the full lifecycle of web development, identify opportunities, explore solutions, and keep customer needs at the center of your work. Our stack is mainly focused on Ruby; however, prior Ruby experience is not essential if you’re passionate about learning new things.

• Strong software engineering foundations: 7+ years of software development experience, specifically with object-oriented programming.
• Relevant product experience: 3+ years of experience working with customer-facing products in industries such as e-commerce, fintech, or SaaS.
• Backend service expertise: Experience designing, implementing, and deploying backend services with a focus on high availability, low latency, and consistency.
• API and data knowledge: A good understanding of API design, SQL, and relational databases.
• Clear communication: Excellent English communication skills and comfort raising concerns, sharing ideas, and documenting your work.
• Collaborative mindset: You contribute to the team, take initiative, and step in to help when needed.
• Solution-oriented thinking: You actively identify opportunities and explore alternative approaches to solving problems.
• Commitment to growth: You take ownership of developing your skills by learning new technologies and seeking new opportunities.

How We Work

Our engineers work in small, fully autonomous, and highly collaborative Agile teams aligned with one of three verticals: Demand, Supply, or Fulfilment.

• Teams are responsible for their own microservices from design and development through deployment, maintenance, and improvement.
• Engineers collaborate closely with product designers, product owners, and frontend, backend, and mobile colleagues.
• We value bold thinking, curiosity, openness, initiative, and a strong customer focus.
• Technical Week creates dedicated space for experimentation, creativity, innovation, and knowledge sharing across domains.

Where You'll Be

This is a Hybrid role based in Amsterdam.
You will work from our Amsterdam HQ a minimum of 2 days per week. At this time, we are only considering candidates who are already based in the Netherlands. As a result, visa sponsorship and relocation support are not available for this position.

In Return

You’ll be part of an enthusiastic, highly motivated team of 800+ Catawikians.

• A competitive Annual Gross Base Salary depending on your level, competencies, and overall experience.
• A Work From Home Allowance to help with your monthly household bills.
• Commuting between your home and our office is covered by Catawiki.
• Amazing Office right in the centre of Amsterdam.

Why You'll Love Working with Us

• Create a visible impact by working at scale in a global organisation serving millions of customers across 80+ categories. In our flat structure, every role has a broad scope and directly impacts both our customers and the business.
• Learn and grow through our Learning & Development initiatives, including clear development plans and mentorship programmes to support your career progression.
• A culture of connection defines us. We’re a passionate, diverse team of 800+ Catawikians representing 60+ nationalities. We foster an inclusive and queer-friendly environment where everyone is encouraged to bring their full self to work.
• Celebrate life’s moments with us. You’ll receive a €100 Catavoucher when you join, a €50 Catavoucher on your birthday, and an extra day off each year to “Pursue Your Passion”. We also offer additional leave for key work anniversaries and important life events. Benefits may vary by location.

Our Offices and Way of Working

Our vibrant offices in Amsterdam and Lisbon are designed to inspire collaboration. Most Catawikians operate in a hybrid setup, combining office-based and remote work, with a minimum of two days per week in the office, unless a role is explicitly stated as fully remote or fully office-based.